B1952

B1952 - Power Liftgate Drive Motor Incorrect Direction






For a complete wiring diagram, refer to.

• When Monitored: Whenever the power liftgate motor is in operation.

• Set Condition: When the power liftgate module senses the direction of the drive motor is in opposition to the direction it is trying to drive the liftgate, this code will set.






Test Step 1 - DTC PRESENT

• With the scan tool, record DTCs.

• Erase DTCs.

• Turn the ignition OFF, wait 10 seconds, then turn the ignition ON.

• If possible, operate the liftgate several times.

• With the scan tool, check for DTCs.

Does the scan tool display B1952 - Power Liftgate Drive Motor - Incorrect Direction?

Yes

• Go to Test Step 2

No

• Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

Test Step 2 - Liftgate Open Driver Circuit and the Liftgate Close Driver Circuits are Crossed






• Turn the ignition OFF.

• Disconnect the power liftgate module C1 harness connector.

• Disconnect the power liftgate drive unit harness connector.

• Trace the liftgate open driver circuit and the liftgate close driver circuits between the PLG C1 harness connector and the drive unit harness connector.

Are the circuits crossed at either connector?

No

• Go to Test Step 3

Yes

• Correct the wiring as necessary.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

Test Step 3 - Position Sensor Signal 1 and the Position Sensor Signal 2 Circuits are Crossed






• Measure the resistance between position sensor signal 1 circuit and the position sensor signal 2 circuit between the power liftgate module C1 harness connector and the power liftgate drive unit harness connector.

• Inspect the power liftgate drive unit and power liftgate module connectors, terminals and harness for damaged or pushed out terminals, or pinched/broken wires. Repair any obvious problems.

• Reconnect the power liftgate module C1 and the power liftgate drive unit harness connectors.

Is the resistance less than 100 ohms for either measurement, or were any wiring/harness problems identified?

No

• Replace the power liftgate drive unit.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

Yes

• Correct the wiring as necessary. If no wiring problems have been identified, replace the power liftgate module.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior